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776 EXPOSED OPENINGS IN INSPECTION CHAMBERS, ACCESS POINTS, FITTINGS AND
EQUIPMENT

• General: Fit purpose made temporary caps. Protect from site traffic.

COMPLETION

901 REMOVAL OF DEBRIS AND CLEANING
• Preparation: Lift covers to manholes, inspection chambers and access points.
Remove mortar droppings, debris and loose wrappings.
- Timing: Before cleaning, final testing, CCTV inspection if specified, and
immediately before handover.
• Cleaning: Thoroughly flush pipelines with water to remove silt and check for
blockages. Rod pipelines between access points if there is any indication that they
may be obstructed.
• Washings and detritus: Do not discharge into sewers or watercourses.
• Covers: Securely replace after cleaning and testing.

903 TEMPORARY MEASURES
• Water used to stabilize tanks and the like during installation: Drain.

911 TESTING AND INSPECTION
• Dates for testing and inspection: Give notice.
- Period of notice: 10 working days.

921 FINAL TESTING OF PRIVATE GRAVITY DRAINS AND SEWERS UP TO DN 300
• Before testing:
- Cement mortar jointing: Leave 24 h.
- Solvent welded pipelines: Leave 1 h.
• Standard: To Building Regulations.
• Method: to be agreed.

941 WATER TESTING OF MANHOLES AND INSPECTION CHAMBERS
• Timing: Before backfilling.
• Standard:
- Exfiltration: To BS EN 1610.
Method: Testing with water (method W).
- Infiltration: No identifiable flow of water penetrating the chamber.

951 TESTING OF ANCILLARY COMPONENTS
• Components: Petrol interceptors and Foul water storage tanks.
• Standard: To BS EN 1610.
- Tests: Exfiltration.
Method: to be agreed.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01